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Evaluation of hearing thresholds of 40Hz auditory event related potential and auditory brainstem response
Author(s): 
Pages: 193-195
Year: Issue:  4
Journal: JOURNAL OF FORENSIC MEDICINE

Keyword:  40Hz听觉相关电位听性脑干反应听力损伤;
Abstract: 对42例74耳(正常听力组32耳,检案中主诉听力下降42耳)分别进行纯音测定,声导抗测定,听性脑干反应(AuditoryBrainstemResponse,ABR)及0.5~2kHz范围的40Hz听觉相关电位(40HertzAuditoryEvent-relatedPotential,40HzAERP)测定,对其中20耳进行睡眠及清醒两种状态的40HzAERP测定.将纯音听阈、40HzAERP反应阈、ABR反应阈三者之间进行比较分析.结果表明,正常听力耳40HzAERP反应阈值较纯音测听阈值高,在不同频率的校正值(差值)不同,0.5kHz为12.7±6.4(dBnHL);1kHz为14.7±6.3(dBnHL);2kHz为15±5.6(dBnHL).ABR阈值比行为听阈高,校正值为8.9±5.3(dBnHL).睡眠状态时40HzAERP阈值较清醒状态阈值高,校正值为9.7±2.45(dBnHL).检案中主诉听力下降者主、客观语音频率均值之间明显不相符,误差率为61%.本研究表明单纯使用ABR、纯音测听中任何一种方法估计语音频率听阈均有一定的误差.
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